Vivitar 52mm Ring Filter Adapter for GoPro HERO3/ HERO3+/ HERO4 + 52mm Vivitar Close-Up Macro Lens +1,+2,+4 and +10 (MPN: VIV-CL-52) Vivitar 52mm Adapter Ring for GoPro HD HERO3, HERO3+ and HERO4 Allows you to mount any type of filter or lens converters with a 52mm thread Vivitar 52mm Close-Up Filter Kit +1,+2,+4 and +10 (MPN: VIV-CL-52) The Vivitar Close-Up Marcro Lens Set includes +1, +2, +4 and +10 close up lenses. The high quality optical magnifying lenses are diopters for close up photography, which shorten the close focusing distance of the lens. it allows the lens to go closer to the subject than before and to achieve a larger image scale. Lenses can be used individually or in combination for maximum effect. Includes 4 close up filters of increasing magnification Filters are double threaded allowing additional filters, lenses, or attachments to be mounted on top